MESON Chess Problem Database
Problem Display
PID: 92706 (2b2b2/KNkppRp1/P1N3R1/8/B4n2/2P5/7B/3Q4 w - - 0 1)
Hartong, Jan
Niemeijer, Meindert
Tijdschrift vd KNSB, 1959
#2
10 + 7
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2019 |
SOLUTION
- SOUND
- Sets
- 1...dxc6
- 2.Bxf4#
- 2.Rxc6#
- 2.Qd6#
- 2.Qd8#
- 1...d6
- 2.Qxd6#
- 1...dxc6
- Tries
- 1.Sb4?
- threat
- 2.Sd5#
- 1...Bxb7
- 2.Qxd7#
- 1...d5
- 2.Sxd5#
- 2.Bxf4#
- 1...d6
- 2.Qxd6#
- 1...e5
- 2.Rc6#
- 1...e6!
- threat
- 1.Sca5?
- 1...Bxb7
- 2.Qxd7#
- 1...d5
- 2.Bxf4#
- 1...d6
- 2.Qxd6#
- 1...e5
- 2.Rc6#
- 1...e6!
- 1...Bxb7
- 1.Sxe7?
- threat
- 2.Sd5#
- 2.Qd6#
- 1...Bxb7
- 2.Qxd7#
- 1...d5
- 2.Sxd5#
- 2.Bxf4#
- 1...d6
- 2.Sd5#
- 2.Qxd6#
- 1...Bxe7!
- threat
- 1.Sb8?
- 1...Bxb7
- 2.Qxd7#
- 1...d5
- 2.Bxf4#
- 2.Rc6#
- 1...d6
- 2.Qxd6#
- 1...e5
- 2.Rc6#
- 1...e6!
- 1...Bxb7
- 1.Sc5?
- 1...Bxa6
- 2.Qxd7#
- 1...dxc6
- 2.Bxf4#
- 2.Rxc6#
- 2.Qd6#
- 1...Bb7
- 2.Qxd7#
- 1...e6
- 2.Sxe6#
- 1...d5
- 2.Bxf4#
- 1...d6
- 2.Qxd6#
- 1...e5!
- 1...Bxa6
- 1.Bxf4+?
- 1...d6
- 2.Qxd6#
- 1...e5!
- 1...d6
- 1.Rxe7?
- threat
- 2.Bxf4#
- 2.Qd6#
- 1...Bxb7
- 2.Qxd7#
- 1...Bxe7!
- threat
- 1.Qd5?
- threat
- 2.Qa5#
- 1...dxc6
- 2.Bxf4#
- 2.Rxc6#
- 2.Qxc6#
- 2.Qd6#
- 2.Qd8#
- 1...d6
- 2.Qxd6#
- 1...Bxb7!
- threat
- 1.Sb4?
- Keys
- 1.Scd8!
- 1...Bxb7
- 2.Qxd7#
- 1...e6
- 2.Sxe6#
- 1...d5
- 2.Bxf4#
- 1...d6
- 2.Qxd6#
- 1...e5
- 2.Rc6#
- 1...Bxb7
- 1.Scd8!
This anticipates 182461(1980)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- P(c);N_SPINS(a),P_SPINP(d)::QAB1(A),XP(c)
- Tries
- Try
- S(F);
- Threat
- S(F)
- Vars
- B(f);N_GUARD,XS(I)::QAR1(A),XP(c)
- P(c);N_SPINS(a),P_SPINP(d)::QAB1(A),XP(c)
- P(d);N_SPINS(a),P_SPINP(c)::R1(G)
- Refutation
- P(d);P_SPINP(c)
- Try
- S(F);
- Vars
- B(f);N_GUARD,XS(I)::QAR1(A),XP(c)
- P(c);N_GUARD,P_SPINP(d)::B(B),XS(a)
- P(c);N_SPINS(a),P_SPINP(d)::QAB1(A),XP(c)
- P(d);N_SPINS(a),P_SPINP(c)::R1(G)
- Refutation
- P(d);P_SPINP(c)
- Try
- S(F);XP(d)
- Threat
- DUALS(2)
- Vars
- B(f);N_GUARD,XS(I)::QAR1(A),XP(c)
- Refutation
- B(g);XS(F)
- Try
- S(F);
- Vars
- B(f);N_GUARD,XS(I)::QAR1(A),XP(c)
- P(c);N_SPINS(a),P_SPINP(d)::QAB1(A),XP(c)
- P(d);N_SPINS(a),P_SPINP(c)::R1(G)
- Refutation
- P(d);P_SPINP(c)
- Try
- S(I);
- Vars
- B(f);N_GUARD,XP(E)::QAR1(A),XP(c)
- B(f);N_GUARD::QAR1(A),XP(c)
- P(d);P_SPINP(c)::S(I),XP(d)
- P(c);N_GUARD,P_SPINP(d)::B(B),XS(a)
- P(c);N_SPINS(a),P_SPINP(d)::QAB1(A),XP(c)
- Refutation
- P(d);N_SPINS(a),P_SPINP(c)
- Try
- B(B);CHECK,XS(a)
- Vars
- P(c);P_SPINP(c),S_CUTP(d)::QAB1(A),XP(c)
- Refutation
- P(d);P_SPINP(d)
- Try
- R(J);P_PINP(c),XP(d)
- Threat
- DUALS(2)
- Vars
- B(f);N_GUARD,XS(I)::QAR1(A),XP(c)
- Refutation
- B(g);N_SPINP(c),XR(J)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- P(c);N_SPINS(a),P_SPINP(d)::QAB1(A),XP(c)
- Refutation
- B(f);XS(I)
- Try
- Actual
- S(F);
- Vars
- B(f);N_GUARD,XS(I)::QAR1(A),XP(c)
- P(d);P_SPINP(c)::S(F),XP(d)
- P(c);N_GUARD,P_SPINP(d)::B(B),XS(a)
- P(c);N_SPINS(a),P_SPINP(d)::QAB1(A),XP(c)
- P(d);N_SPINS(a),P_SPINP(c)::R1(G)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).